人教版book8unit2词汇1.ppt

Many attempts to clone mammals failed. But at last the determination and patience of the scientists paid off in 1996 with a breakthrough—the cloning of Dolly the sheep. 克隆哺乳动物的多次尝试都失败了。但是，科学家的决心和耐心最终得到了回报，这就是1996年具有突破性的克隆羊“多莉”的诞生。 pay off v. 1) if sth that involves risk pays off, it is successful and brings the results that you want vi. 得到好结果；取得成功 他的努力没有白费，女孩接受了他的求婚。 His efforts paid off when the girl accepted his proposal. Their hard work is beginning to pay off. 他们的辛勤劳动显出成果了。 To his great joy, his patience and hard work finally paid off with a gold medal at the 2010 Asian Games. 使他非常高兴的是，他的耐心和辛勤劳动最终在2010年亚运会上得到回报而获得金牌。 All the training you’ve been doing seems to have paid off handsomely. (has had very good results) 2) to finish paying money owed for sth pay sth off/ pay off sth 付清款项，偿清欠款 Having worked hard for ten years, he finally paid all his debts off. I used to borrow money to pay off my overdraft. (透支) She paid the taxi off and walked the rest of the way. Not until ten years later ______________________(他们还清了) their debts. (pay) 付钱给某人作为……的费用 pay sb. for sth./ pay sb. sth. He didn’t even offer to pay me for the ticket. I paid him 2 dollars to cut the grass. 为某事付出代价 pay for sth. You will have to pay for your carelessness. 你得为你的粗心付出代价。 还钱，报复 pay back Can you lend me 100 dollars and I will pay you back on Friday? 你能借我100美元吗？我星期五还给你。 The newly issued law opens everyone’s eyes to the possibility _________________________________ their gambling. (pay) 这部最近颁布的法律让每个人都看到政府官员将为赌博而付出代价的可能性。 Cloning scientists were cast down to find that Dolly’s illnesses were more appropriate to a much older animal. 研究克隆的科学家发现多莉得的病更容易发生在年老的羊身上，这让他们很沮丧。 cast down 沮丧，不愉快 be cast down (by sth) (因某事)沮丧，不愉快 Don’t be so cast down. Just keep up your spirits. There was a time _______________________(他感到沮丧) and was about to give up his faith. (cast) He is not easily cast down. 他很少有情绪低落的时候。 downcast adj. sad or unhappy 沮丧的，不愉快的 a downcast expression 垂头丧气的表情 appropriate